if.h revision 1.46
1 /* $NetBSD: if.h,v 1.46 2000/03/06 20:49:00 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by William Studnemund and Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1982, 1986, 1989, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)if.h 8.3 (Berkeley) 2/9/95 72 */ 73 74 #ifndef _NET_IF_H_ 75 #define _NET_IF_H_ 76 77 #if !defined(_XOPEN_SOURCE) 78 79 #include <sys/queue.h> 80 81 /* 82 * Structures defining a network interface, providing a packet 83 * transport mechanism (ala level 0 of the PUP protocols). 84 * 85 * Each interface accepts output datagrams of a specified maximum 86 * length, and provides higher level routines with input datagrams 87 * received from its medium. 88 * 89 * Output occurs when the routine if_output is called, with four parameters: 90 * (*ifp->if_output)(ifp, m, dst, rt) 91 * Here m is the mbuf chain to be sent and dst is the destination address. 92 * The output routine encapsulates the supplied datagram if necessary, 93 * and then transmits it on its medium. 94 * 95 * On input, each interface unwraps the data received by it, and either 96 * places it on the input queue of a internetwork datagram routine 97 * and posts the associated software interrupt, or passes the datagram to a raw 98 * packet input routine. 99 * 100 * Routines exist for locating interfaces by their addresses 101 * or for locating a interface on a certain network, as well as more general 102 * routing and gateway routines maintaining information used to locate 103 * interfaces. These routines live in the files if.c and route.c 104 */ 105 /* XXX fast fix for SNMP, going away soon */ 106 #include <sys/time.h> 107 108 #if defined(_KERNEL) && !defined(_LKM) 109 #include "opt_compat_netbsd.h" 110 #endif 111 112 struct mbuf; 113 struct proc; 114 struct rtentry; 115 struct socket; 116 struct ether_header; 117 118 /* 119 * Structure defining statistics and other data kept regarding a network 120 * interface. 121 */ 122 struct if_data { 123 /* generic interface information */ 124 u_char ifi_type; /* ethernet, tokenring, etc. */ 125 u_char ifi_addrlen; /* media address length */ 126 u_char ifi_hdrlen; /* media header length */ 127 int ifi_link_state; /* current link state */ 128 u_quad_t ifi_mtu; /* maximum transmission unit */ 129 u_quad_t ifi_metric; /* routing metric (external only) */ 130 u_quad_t ifi_baudrate; /* linespeed */ 131 /* volatile statistics */ 132 u_quad_t ifi_ipackets; /* packets received on interface */ 133 u_quad_t ifi_ierrors; /* input errors on interface */ 134 u_quad_t ifi_opackets; /* packets sent on interface */ 135 u_quad_t ifi_oerrors; /* output errors on interface */ 136 u_quad_t ifi_collisions; /* collisions on csma interfaces */ 137 u_quad_t ifi_ibytes; /* total number of octets received */ 138 u_quad_t ifi_obytes; /* total number of octets sent */ 139 u_quad_t ifi_imcasts; /* packets received via multicast */ 140 u_quad_t ifi_omcasts; /* packets sent via multicast */ 141 u_quad_t ifi_iqdrops; /* dropped on input, this interface */ 142 u_quad_t ifi_noproto; /* destined for unsupported protocol */ 143 struct timeval ifi_lastchange; /* last updated */ 144 }; 145 146 /* 147 * Values for if_link_state. 148 */ 149 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 150 #define LINK_STATE_DOWN 1 /* link is down */ 151 #define LINK_STATE_UP 2 /* link is up */ 152 153 #if defined(_KERNEL) && defined(COMPAT_14) 154 /* Pre-1.5 if_data struct */ 155 struct if_data14 { 156 /* generic interface information */ 157 u_char ifi_type; /* ethernet, tokenring, etc. */ 158 u_char ifi_addrlen; /* media address length */ 159 u_char ifi_hdrlen; /* media header length */ 160 u_long ifi_mtu; /* maximum transmission unit */ 161 u_long ifi_metric; /* routing metric (external only) */ 162 u_long ifi_baudrate; /* linespeed */ 163 /* volatile statistics */ 164 u_long ifi_ipackets; /* packets received on interface */ 165 u_long ifi_ierrors; /* input errors on interface */ 166 u_long ifi_opackets; /* packets sent on interface */ 167 u_long ifi_oerrors; /* output errors on interface */ 168 u_long ifi_collisions; /* collisions on csma interfaces */ 169 u_long ifi_ibytes; /* total number of octets received */ 170 u_long ifi_obytes; /* total number of octets sent */ 171 u_long ifi_imcasts; /* packets received via multicast */ 172 u_long ifi_omcasts; /* packets sent via multicast */ 173 u_long ifi_iqdrops; /* dropped on input, this interface */ 174 u_long ifi_noproto; /* destined for unsupported protocol */ 175 struct timeval ifi_lastchange; /* last updated */ 176 }; 177 #endif /* _KERNEL && COMPAT_14 */ 178 179 /* 180 * Structure defining a queue for a network interface. 181 * 182 * (Would like to call this struct ``if'', but C isn't PL/1.) 183 */ 184 TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ 185 186 /* 187 * Length of interface external name, including terminating '\0'. 188 * Note: this is the same size as a generic device's external name. 189 */ 190 #define IFNAMSIZ 16 191 #define IF_NAMESIZE IFNAMSIZ 192 193 struct ifnet { /* and the entries */ 194 void *if_softc; /* lower-level data for this if */ 195 TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */ 196 TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */ 197 char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 198 int if_pcount; /* number of promiscuous listeners */ 199 caddr_t if_bpf; /* packet filter structure */ 200 u_short if_index; /* numeric abbreviation for this if */ 201 short if_timer; /* time 'til if_watchdog called */ 202 short if_flags; /* up/down, broadcast, etc. */ 203 short if__pad1; /* be nice to m68k ports */ 204 struct if_data if_data; /* statistics and other data about if */ 205 /* 206 * Procedure handles. If you add more of these, don't forget the 207 * corresponding NULL stub in if.c. 208 */ 209 int (*if_output) /* output routine (enqueue) */ 210 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 211 struct rtentry *)); 212 void (*if_input) /* input routine (from h/w driver) */ 213 __P((struct ifnet *, struct mbuf *)); 214 void (*if_start) /* initiate output routine */ 215 __P((struct ifnet *)); 216 int (*if_ioctl) /* ioctl routine */ 217 __P((struct ifnet *, u_long, caddr_t)); 218 int (*if_reset) /* XXX bus reset routine */ 219 __P((struct ifnet *)); 220 void (*if_watchdog) /* timer routine */ 221 __P((struct ifnet *)); 222 void (*if_drain) /* routine to release resources */ 223 __P((struct ifnet *)); 224 struct ifqueue { 225 struct mbuf *ifq_head; 226 struct mbuf *ifq_tail; 227 int ifq_len; 228 int ifq_maxlen; 229 int ifq_drops; 230 } if_snd; /* output queue */ 231 struct sockaddr_dl *if_sadl; /* pointer to our sockaddr_dl */ 232 u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 233 struct ifprefix *if_prefixlist; /* linked list of prefixes per if */ 234 }; 235 #define if_mtu if_data.ifi_mtu 236 #define if_type if_data.ifi_type 237 #define if_addrlen if_data.ifi_addrlen 238 #define if_hdrlen if_data.ifi_hdrlen 239 #define if_metric if_data.ifi_metric 240 #define if_link_state if_data.ifi_link_state 241 #define if_baudrate if_data.ifi_baudrate 242 #define if_ipackets if_data.ifi_ipackets 243 #define if_ierrors if_data.ifi_ierrors 244 #define if_opackets if_data.ifi_opackets 245 #define if_oerrors if_data.ifi_oerrors 246 #define if_collisions if_data.ifi_collisions 247 #define if_ibytes if_data.ifi_ibytes 248 #define if_obytes if_data.ifi_obytes 249 #define if_imcasts if_data.ifi_imcasts 250 #define if_omcasts if_data.ifi_omcasts 251 #define if_iqdrops if_data.ifi_iqdrops 252 #define if_noproto if_data.ifi_noproto 253 #define if_lastchange if_data.ifi_lastchange 254 255 #define IFF_UP 0x1 /* interface is up */ 256 #define IFF_BROADCAST 0x2 /* broadcast address valid */ 257 #define IFF_DEBUG 0x4 /* turn on debugging */ 258 #define IFF_LOOPBACK 0x8 /* is a loopback net */ 259 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 260 #define IFF_NOTRAILERS 0x20 /* avoid use of trailers */ 261 #define IFF_RUNNING 0x40 /* resources allocated */ 262 #define IFF_NOARP 0x80 /* no address resolution protocol */ 263 #define IFF_PROMISC 0x100 /* receive all packets */ 264 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */ 265 #define IFF_OACTIVE 0x400 /* transmission in progress */ 266 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */ 267 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 268 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 269 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 270 #define IFF_MULTICAST 0x8000 /* supports multicast */ 271 272 /* flags set internally only: */ 273 #define IFF_CANTCHANGE \ 274 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 275 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) 276 277 /* 278 * Some convenience macros used for setting ifi_baudrate. 279 * XXX 1000 vs. 1024? --thorpej (at) netbsd.org 280 */ 281 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */ 282 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 283 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 284 285 /* 286 * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) 287 * input routines have queues of messages stored on ifqueue structures 288 * (defined above). Entries are added to and deleted from these structures 289 * by these macros, which should be called with ipl raised to splimp(). 290 */ 291 #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 292 #define IF_DROP(ifq) ((ifq)->ifq_drops++) 293 #define IF_ENQUEUE(ifq, m) { \ 294 (m)->m_nextpkt = 0; \ 295 if ((ifq)->ifq_tail == 0) \ 296 (ifq)->ifq_head = m; \ 297 else \ 298 (ifq)->ifq_tail->m_nextpkt = m; \ 299 (ifq)->ifq_tail = m; \ 300 (ifq)->ifq_len++; \ 301 } 302 #define IF_PREPEND(ifq, m) { \ 303 (m)->m_nextpkt = (ifq)->ifq_head; \ 304 if ((ifq)->ifq_tail == 0) \ 305 (ifq)->ifq_tail = (m); \ 306 (ifq)->ifq_head = (m); \ 307 (ifq)->ifq_len++; \ 308 } 309 #define IF_DEQUEUE(ifq, m) { \ 310 (m) = (ifq)->ifq_head; \ 311 if (m) { \ 312 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 313 (ifq)->ifq_tail = 0; \ 314 (m)->m_nextpkt = 0; \ 315 (ifq)->ifq_len--; \ 316 } \ 317 } 318 319 #define IFQ_MAXLEN 50 320 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 321 322 /* 323 * Structure defining statistics and other data kept regarding an address 324 * on a network interface. 325 */ 326 struct ifaddr_data { 327 int64_t ifad_inbytes; 328 int64_t ifad_outbytes; 329 }; 330 331 /* 332 * The ifaddr structure contains information about one address 333 * of an interface. They are maintained by the different address families, 334 * are allocated and attached when an address is set, and are linked 335 * together so all addresses for an interface can be located. 336 */ 337 struct ifaddr { 338 struct sockaddr *ifa_addr; /* address of interface */ 339 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 340 #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 341 struct sockaddr *ifa_netmask; /* used to determine subnet */ 342 struct ifnet *ifa_ifp; /* back-pointer to interface */ 343 TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ 344 struct ifaddr_data ifa_data; /* statistics on the address */ 345 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 346 __P((int, struct rtentry *, struct sockaddr *)); 347 u_int ifa_flags; /* mostly rt_flags for cloning */ 348 int ifa_refcnt; /* count of references */ 349 int ifa_metric; /* cost of going out this interface */ 350 }; 351 #define IFA_ROUTE RTF_UP /* route installed */ 352 353 /* 354 * The prefix structure contains information about one prefix 355 * of an interface. They are maintained by the different address families, 356 * are allocated and attached when an prefix or an address is set, 357 * and are linked together so all prfefixes for an interface can be located. 358 */ 359 struct ifprefix { 360 struct sockaddr *ifpr_prefix; /* prefix of interface */ 361 struct ifnet *ifpr_ifp; /* back-pointer to interface */ 362 struct ifprefix *ifpr_next; 363 u_char ifpr_plen; /* prefix length in bits */ 364 u_char ifpr_type; /* protocol dependent prefix type */ 365 }; 366 367 /* 368 * Message format for use in obtaining information about interfaces 369 * from sysctl and the routing socket. 370 */ 371 struct if_msghdr { 372 u_short ifm_msglen; /* to skip over non-understood messages */ 373 u_char ifm_version; /* future binary compatability */ 374 u_char ifm_type; /* message type */ 375 int ifm_addrs; /* like rtm_addrs */ 376 int ifm_flags; /* value of if_flags */ 377 u_short ifm_index; /* index for associated ifp */ 378 struct if_data ifm_data;/* statistics and other data about if */ 379 }; 380 381 #if defined(_KERNEL) && defined(COMPAT_14) 382 /* pre-1.5 if_msghdr (ifm_data changed) */ 383 struct if_msghdr14 { 384 u_short ifm_msglen; /* to skip over non-understood messages */ 385 u_char ifm_version; /* future binary compatability */ 386 u_char ifm_type; /* message type */ 387 int ifm_addrs; /* like rtm_addrs */ 388 int ifm_flags; /* value of if_flags */ 389 u_short ifm_index; /* index for associated ifp */ 390 struct if_data14 ifm_data; /* statistics and other data about if */ 391 }; 392 #endif /* _KERNEL && COMPAT_14 */ 393 394 /* 395 * Message format for use in obtaining information about interface addresses 396 * from sysctl and the routing socket. 397 */ 398 struct ifa_msghdr { 399 u_short ifam_msglen; /* to skip over non-understood messages */ 400 u_char ifam_version; /* future binary compatability */ 401 u_char ifam_type; /* message type */ 402 int ifam_addrs; /* like rtm_addrs */ 403 int ifam_flags; /* value of ifa_flags */ 404 u_short ifam_index; /* index for associated ifp */ 405 int ifam_metric; /* value of ifa_metric */ 406 }; 407 408 /* 409 * Message format announcing the arrival or departure of a network interface. 410 */ 411 struct if_announcemsghdr { 412 u_short ifan_msglen; /* to skip over non-understood messages */ 413 u_char ifan_version; /* future binary compatibility */ 414 u_char ifan_type; /* message type */ 415 u_short ifan_index; /* index for associated ifp */ 416 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 417 u_short ifan_what; /* what type of announcement */ 418 }; 419 420 #define IFAN_ARRIVAL 0 /* interface arrival */ 421 #define IFAN_DEPARTURE 1 /* interface departure */ 422 423 /* 424 * Interface request structure used for socket 425 * ioctl's. All interface ioctl's must have parameter 426 * definitions which begin with ifr_name. The 427 * remainder may be interface specific. 428 */ 429 struct ifreq { 430 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 431 union { 432 struct sockaddr ifru_addr; 433 struct sockaddr ifru_dstaddr; 434 struct sockaddr ifru_broadaddr; 435 short ifru_flags; 436 int ifru_metric; 437 int ifru_mtu; 438 u_int ifru_value; 439 caddr_t ifru_data; 440 } ifr_ifru; 441 #define ifr_addr ifr_ifru.ifru_addr /* address */ 442 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 443 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 444 #define ifr_flags ifr_ifru.ifru_flags /* flags */ 445 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 446 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 447 #define ifr_value ifr_ifru.ifru_value /* generic value */ 448 #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ 449 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 450 }; 451 452 struct ifaliasreq { 453 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 454 struct sockaddr ifra_addr; 455 struct sockaddr ifra_dstaddr; 456 #define ifra_broadaddr ifra_dstaddr 457 struct sockaddr ifra_mask; 458 }; 459 460 struct ifmediareq { 461 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 462 int ifm_current; /* current media options */ 463 int ifm_mask; /* don't care mask */ 464 int ifm_status; /* media status */ 465 int ifm_active; /* active options */ 466 int ifm_count; /* # entries in ifm_ulist 467 array */ 468 int *ifm_ulist; /* media words */ 469 }; 470 471 472 struct ifdrv { 473 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 474 unsigned long ifd_cmd; 475 size_t ifd_len; 476 void *ifd_data; 477 }; 478 479 /* 480 * Structure used in SIOCGIFCONF request. 481 * Used to retrieve interface configuration 482 * for machine (useful for programs which 483 * must know all networks accessible). 484 */ 485 struct ifconf { 486 int ifc_len; /* size of associated buffer */ 487 union { 488 caddr_t ifcu_buf; 489 struct ifreq *ifcu_req; 490 } ifc_ifcu; 491 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 492 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 493 }; 494 495 /* 496 * Structure for SIOC[AGD]LIFADDR 497 */ 498 struct if_laddrreq { 499 char iflr_name[IFNAMSIZ]; 500 unsigned int flags; 501 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ 502 unsigned int prefixlen; /* in/out */ 503 struct sockaddr_storage addr; /* in/out */ 504 struct sockaddr_storage dstaddr; /* out */ 505 }; 506 507 #include <net/if_arp.h> 508 509 #endif /* !_XOPEN_SOURCE */ 510 511 #ifdef _KERNEL 512 #ifdef IFAREF_DEBUG 513 #define IFAREF(ifa) \ 514 do { \ 515 printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 516 (ifa), ++(ifa)->ifa_refcnt); \ 517 } while (0) 518 519 #define IFAFREE(ifa) \ 520 do { \ 521 if ((ifa)->ifa_refcnt <= 0) \ 522 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 523 __LINE__, (ifa)); \ 524 printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \ 525 (ifa), --(ifa)->ifa_refcnt); \ 526 if ((ifa)->ifa_refcnt == 0) \ 527 ifafree(ifa); \ 528 } while (0) 529 #else 530 #define IFAREF(ifa) (ifa)->ifa_refcnt++ 531 532 #ifdef DIAGNOSTIC 533 #define IFAFREE(ifa) \ 534 do { \ 535 if ((ifa)->ifa_refcnt <= 0) \ 536 panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \ 537 __LINE__, (ifa)); \ 538 if (--(ifa)->ifa_refcnt == 0) \ 539 ifafree(ifa); \ 540 } while (0) 541 #else 542 #define IFAFREE(ifa) \ 543 do { \ 544 if (--(ifa)->ifa_refcnt == 0) \ 545 ifafree(ifa); \ 546 } while (0) 547 #endif /* DIAGNOSTIC */ 548 #endif /* IFAREF_DEBUG */ 549 550 struct ifnet_head ifnet; 551 struct ifnet **ifindex2ifnet; 552 #if 0 553 struct ifnet loif[]; 554 #endif 555 int if_index; 556 557 void ether_ifattach __P((struct ifnet *, const u_int8_t *)); 558 void ether_ifdetach __P((struct ifnet *)); 559 char *ether_sprintf __P((const u_char *)); 560 561 void if_attach __P((struct ifnet *)); 562 void if_deactivate __P((struct ifnet *)); 563 void if_detach __P((struct ifnet *)); 564 void if_down __P((struct ifnet *)); 565 void if_qflush __P((struct ifqueue *)); 566 void if_slowtimo __P((void *)); 567 void if_up __P((struct ifnet *)); 568 int ifconf __P((u_long, caddr_t)); 569 void ifinit __P((void)); 570 int ifioctl __P((struct socket *, u_long, caddr_t, struct proc *)); 571 int ifpromisc __P((struct ifnet *, int)); 572 struct ifnet *ifunit __P((const char *)); 573 struct ifnet *if_withname __P((struct sockaddr *)); 574 575 struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 576 struct ifaddr *ifa_ifwithaf __P((int)); 577 struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 578 struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 579 struct ifaddr *ifa_ifwithladdr __P((struct sockaddr *)); 580 struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 581 struct sockaddr *)); 582 struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 583 void ifafree __P((struct ifaddr *)); 584 void link_rtrequest __P((int, struct rtentry *, struct sockaddr *)); 585 586 int loioctl __P((struct ifnet *, u_long, caddr_t)); 587 void loopattach __P((int)); 588 int looutput __P((struct ifnet *, 589 struct mbuf *, struct sockaddr *, struct rtentry *)); 590 void lortrequest __P((int, struct rtentry *, struct sockaddr *)); 591 592 /* 593 * These are exported because they're an easy way to tell if 594 * an interface is going away without having to burn a flag. 595 */ 596 int if_nulloutput __P((struct ifnet *, struct mbuf *, 597 struct sockaddr *, struct rtentry *)); 598 void if_nullinput __P((struct ifnet *, struct mbuf *)); 599 void if_nullstart __P((struct ifnet *)); 600 int if_nullioctl __P((struct ifnet *, u_long, caddr_t)); 601 int if_nullreset __P((struct ifnet *)); 602 void if_nullwatchdog __P((struct ifnet *)); 603 void if_nulldrain __P((struct ifnet *)); 604 #else 605 struct if_nameindex { 606 unsigned int if_index; /* 1, 2, ... */ 607 char *if_name; /* null terminated name: "le0", ... */ 608 }; 609 610 #include <sys/cdefs.h> 611 __BEGIN_DECLS 612 unsigned int if_nametoindex __P((const char *)); 613 char * if_indextoname __P((unsigned int, char *)); 614 struct if_nameindex * if_nameindex __P((void)); 615 void if_freenameindex __P((struct if_nameindex *)); 616 __END_DECLS 617 #endif /* _KERNEL */ 618 #endif /* !_NET_IF_H_ */ 619
Indexes created Sun Sep 21 16:09:51 GMT 2025